It’s getting testy on NBC’s “The Biggest Loser.” After last week’s challenges and weigh in, it’s clear that Michael is watching his back, as are Miggy and Migdalia. Meanwhile, Lance and Melissa are still liars, and nobody likes a liar.

NBC’s “The Biggest Loser” consistently transforms the lives of its contestants, but that doesn’t mean every one of them really wants to be on that ranch and do the necessary work to change their bodies. Last night we saw two instances of just that, despite what those contestants would tell you.

They began by reminding us that there were two teams, blue and yellow, that had been sent home on Day 1 for 30 days. At his point, it was halfway through the 30 days, and each team was working extremely hard to earn that spot back on the ranch.

Last night on NBC’s “The Biggest Loser,” they began with Bob Harper and Jillian Michaels talking about how Week 2 is notoriously difficult for contestants. That’s because they typically lose a lot of weight in Week 1 and then their bodies start to rebound and fight back after that.

So Bob went to work with Michael, who came in at 526 pounds, the heaviest contestant ever on the show. Then they showed Dr. Huizenga lecturing the group and discussing how unhealthy they all were. But before he got to the dirty scoop on exactly how unhealthy they were, he had Michael and his mom Maria meet with Bob…and they put weights on Bob that were equivalent to Michael’s excess “baggage.” Then seeing how Bob was practically immobile, it hit Michael how hard just how obese he was and how much he needed to be on this show.